Research Article: 5,22-Stigmastadien-3β-yl p-toluene­sulfonate

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): Kamal Aziz Ketuly, A. Hamid A. Hadi, Hamid Khaledi, Edward R. T. Tiekink.


The asymmetric unit of the title compound {systematic name: (3S,8S,9S,10R,13R,14S,17R)-17-[(E,2R,5S)-5-ethyl-6-methyl­hept-3-en-2-yl]-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodeca­hydro-1H-cyclo­penta­[a]phenanthren-3-yl p-toluene­sulfonate}, C36H54O3S, comprises two independent mol­ecules that differ significantly in terms of the relative orientations of the peripheral groups; the conformation about the C=C bond of the side chain is E. In the crystal, mol­ecules associate into linear supra­molecular chains aligned along the a axis via C—H⋯O inter­actions.

Partial Text

For the use of 5,22-stigmastadien-3β-yl p-toluene­sulfonate, see: Partridge et al. (1974 ▶); Khripach et al. (2002 ▶); Foley et al. (2010 ▶); Ketuly et al. (1997 ▶). For the synthesis, see: Foley et al. (2010 ▶).




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